/**
 * Copyright (C) 2002-2015   The FreeCol Team
 * <p>
 * This file is part of FreeCol.
 * <p>
 * FreeCol is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 * <p>
 * FreeCol is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * <p>
 * You should have received a copy of the GNU General Public License
 * along with FreeCol.  If not, see <http://www.gnu.org/licenses/>.
 */

package net.sf.freecol.common.i18n;

import java.util.EnumMap;
import java.util.Map;

import static net.sf.freecol.common.util.CollectionUtils.*;


/**
 * This class handles zero or one rule for each number category.
 */
public class DefaultNumberRule extends Number
{

    final Map< Category, Rule > rules = new EnumMap<>( Category.class );


    /**
     * Add a parsed rule for category.
     *
     * @param number a <code>Category</code> value
     * @param rule a <code>Rule</code> value
     */
    public void addRule( Category number, Rule rule )
    {
        rules.put( number, rule );
    }

    /**
     * Add an unparsed rule for category.
     *
     * @param number a <code>Category</code> value
     * @param input a <code>String</code> value
     */
    public void addRule( Category number, String input )
    {
        rules.put( number, new Rule( input ) );
    }

    /**
     * Return the number of rules added.
     *
     * @return an <code>int</code> value
     */
    public int countRules( )
    {
        return rules.values( ).size( );
    }

    /**
     * Return the rule for the given category.
     *
     * @param category a <code>Category</code> value
     * @return a <code>Rule</code> value
     */
    public Rule getRule( Category category )
    {
        return rules.get( category );
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public Category getCategory( double input )
    {
        return find( Category.values( ),
                     category -> rules.containsKey( category )
                             && rules.get( category ).matches( input ), Category.other );
    }
}
